nk497 writes: "Google and Mozilla have had a search deal for five years, which made Google the default search engine for the Firefox browser. In turn, Google's royalty payments made up the vast majority of its revenue; Google's cash made up 85% of the royalty money it gets from search engines and other web firms, which makes up most of its total revenue. The latest deal ended in November, but Mozilla and Google are still in "active negotiations" — suggesting Google may pull out. The last deal was signed three years ago, days before the announcement of Chrome, which as since overtaken Firefox as the number two browser worldwide."